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CN108285900A - A kind of recombination algin catenase and its construction method and application - Google Patents

A kind of recombination algin catenase and its construction method and application Download PDF

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Publication number
CN108285900A
CN108285900A CN201810325487.9A CN201810325487A CN108285900A CN 108285900 A CN108285900 A CN 108285900A CN 201810325487 A CN201810325487 A CN 201810325487A CN 108285900 A CN108285900 A CN 108285900A
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algin catenase
algin
aly
cob
expression vector
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CN108285900B (en
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史劲松
许正宏
李恒
郝瑶
龚劲松
李会
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Chengdu Yongan Yuanhe Biotechnology Co Ltd
Jiangnan University
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Jiangnan University
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Abstract

The invention discloses a kind of recombination algin catenase and its construction method and applications, belong to biotechnology.Algin catenase Aly Cob according to the present invention are from environmental sample (at kelp stacking and mixture of plant produced waste material), the present invention utilizes the technical method of genetic engineering, it will be in the gene cloning to expression vector of the algin catenase, obtain can heterogenous expression algin catenase recombinant bacterial strain, the algin catenase Aly Cob that the strain fermentation generates have the function of that degradation sodium alginate prepares brown alga oligose.Algin catenase Aly Cob provided by the invention can be widely applied to agricultural, food, feed addition, medicine and seaweed processing and other fields.

Description

A kind of recombination algin catenase and its construction method and application
Technical field
The present invention relates to a kind of recombination algin catenase and its construction method and applications, belong to biotechnology.
Background technology
In recent years, flourishing with marine drug, the research of algal polysaccharides is paid more and more attention, and algin is it One of.Algin is with a wide range of applications, and algin degradation product is due to antitumor, immunological regulation, hypoglycemic blood The multiple biological activities such as fat have become brown alga acid product in the world and deeply research and develop the representative direction of high value added utilization and grind at present Study carefully hot spot.Algin catenase digests production brown alga oligose and low-molecular-weight polysaccharide as toolenzyme has degradation condition mild, The advantages that process control, yield is high, has gradually replaced traditional acid hydrolysis method and has become the major way of brown alga oligose production.This Outside, this fermentoid also all has important researching value and application value in addition to that can prepare brown alga oligose in all various aspects, such as living The preparation of property Tang oligosaccharide, the preparation of protoplast, the auxiliary treatment etc. of pulmonary cystic fibrosis.Therefore, algin catenase Excavation hold out broad prospects.
It has been reported that algin catenase mostly be from kelp, with brown alga be eat marine animal and soil in microorganism Middle acquisition, such as pseudoalteromonas (Pseudoaltermonas elyakovii), pseudomonad (Pseudomonas Sp.QD03, Pseudomonas fluorescens, Pseudomonas syringae), nitrogen-fixing bacteria (Azotobacter Vinelandii), vibrios (Vibrio sp.510-64, Vibrio sp.O2), Klebsiella (Klebsiella Pneumonia), bacillus (Bacillus sp.ATB-1015), Flavobacterium (Flavobacterium sp.LXA), alternating Monad (Alteromonas sp.M-1), bar bacterium (Corynebacterium sp.ALY-1), enterobacteria (Enterobacter-Cloacae M-1), streptomycete (Streptomyces sp.ALG-5) etc..In addition, in a small number of virus With algin catenase is had also discovered in bacteriophage.Most of microbes producing cellulase growth conditions is special, and yield of enzyme is low, and separation is tired It is difficult.The gene for having had more than 20 kinds of algin catenases at present is cloned and is sequenced, and is constructed a variety of recombination algins and split Enzyme gene engineering bacteria is solved, but recombination alginate lyase gene engineering expression is relatively low, limits the application of enzyme.Therefore, sharp With genetic engineering means, further obtain high yield algin catenase engineering bacteria, by push algin catenase development and its Application extension.
Invention content
The first purpose of the invention is to provide a kind of algin catenase Aly-Cob and its encoding genes.
Recombination algin catenase Aly-Cob provided by the present invention is obtained, ammonia by building Fosmid library screenings Base sequence set has one of following feature:
1) 1-352s or 30-352 amino acids residue sequence of the SEQ ID NO.2 since aminoterminal in sequence table;
2) one or several amino acid substitutions, missing are carried out to amino acid sequence shown in SEQ ID NO.2 in sequence table Or addition and formed have the active amino acid sequence of algin catenase.
The present invention also provides the encoding gene of algin catenase Aly-Cob (being named as aly-cob), have following cores One of nucleotide sequence feature:
1) in sequence table SEQ ID NO.1 DNA (DNA) sequence;
2) in polynucleotide SEQ ID NO.2 amino acid sequences DNA (DNA) sequence;
3) one or several nucleotide are carried out to DNA (DNA) sequence of SEQ ID NO.1 in sequence table to take Coding has the active nucleotide sequence of algin catenase obtained from generation, missing or addition.
The amino acid sequence and its nucleotide coding sequence of the recombination algin catenase of the present invention can also be according to predictions Aly-Cob amino acid sequence and its artificial synthesized acquisition of nucleotide coding sequence.
Second object of the present invention is to provide the recombinant expression plasmid containing the alginate lyase gene and again Group engineering strain.
The recombinant expression plasmid is the expression vector for carrying the gene for encoding the inscribe algin catenase, is Refer to coli expression carrier, Yeast expression carrier, hay bacillus expression vector, Corynebacterium glutamicum expression vector, lactic acid bacteria Expression vector, streptomyces expression vector, phage vector, filamentous fungi expression vector, plant expression vector, insect expression carry Body or mammalian cell expression vector.The coli expression carrier, can be pET-21a (+), pET-28a (+), pET-32a(+).The hay bacillus expression vector can be pMA5.The Yeast expression carrier can be pPIC3.5k.It is described Corynebacterium glutamicum expression vector can be pDXW-10.
The recombination engineered strain is recombinant bacterium or transgenosis for recombinantly expressing inscribe algin catenase Cell line, refer to e. coli host cell (such as Escherichia coli BL21, Escherichia coli JM109, Escherichia coli DH5 α etc.), yeast host cells (such as Saccharomyces cerevisiae, Pichiapas Toris, Kluyveromyces lactis etc.), hay bacillus host cell (such as Bacillus subtilis R25, Bacillus subtilis 9920 etc.), corynebacterium glutamicum (Corynebacterium glutamicum etc.), actinomyces Host cell (such as Streptomyces spp.), filamentous fungal host cell (such as Trichoderma viride, Trichoderma reesei, Aspergillus niger, Aspergillus nidulans etc.), insect cell (such as Bombyx mori, Antharaea eucalypti etc.), mammalian cell (such as Chinese hamster ovary cell CHO, immature storehouse Mouse kidney cell BHK, CHL cells CHL etc.) in one kind.
Specifically, the recombination engineered strain can be E.coli BL21pLysS/pET-28a (+)-aly-cob.
Third object of the present invention is to provide a kind of methods of Prepare restructuring algin catenase Aly-Cob, are that will compile Code gene aly-cob is cloned into expression vector, and imports host cell, to obtain recombination algin catenase.For example, will structure In good recombinant bacterium E.coli BL21pLysS/pET-28a (+)-aly-cob access liquid LB, 37 DEG C of cultures to OD600Up to 0.8 Fermentation supernatant is collected, and collect thalline and be crushed, centrifugation is stayed after the IPTG inductions of final concentration of 0.5mmol/L are added in left and right Merge with fermentation supernatant after taking supernatant, it is purified to obtain recombination algin catenase.
The present invention screens to obtain one section of alginate lyase gene sequence aly-cob using structure Fosmid library approach, Gene code head of district 1059bp encodes 352 amino acid, wherein 1-29 amino acids encoded signal peptide, 30-352 ammonia Base acid encoding algin catenase, molecular weight about 35kDa belong to 7 family of polysaceharide lyase.
The present invention Aly-Cob that heterogenous expression obtains in Escherichia coli, when using sodium alginate as substrate, in 45 DEG C, pH There is highest enzymatic activity, not only degradable poly guluronic acid (PG) but also the polymannuronate (PM) that can degrade under conditions of 8.0, But it is stronger to the specificity of the latter.Liquid matter analysis shows, the catabolite of sodium alginate is mainly two, three, tetrose, be on a small quantity five Sugar and six sugar.The enzyme is in 1.5molL-1NaCl and 1molL-1KCl under the conditions of, enzyme activity, which is respectively increased, lives to protoenzyme 1.7 and 1.5 times.
Algin catenase Aly-Cob provided by the invention can individually or with other source algin degrading enzymes or other Kind fermentoid is used in conjunction with, and is used to prepare brown alga oligose or is glued raw material progress viscosity reduction processing to the height containing alginate.
The algin catenase of the present invention can be widely used for chemical industry, agricultural, food and feed addition, medicine and seaweed heredity The fields such as engineering.
Beneficial effects of the present invention:
Aly-Cob provided by the invention is a kind of recombination algin catenase of great potential, and advantage is mainly reflected in: (1) the recombinant bacterium enzyme activity built is horizontal high, and the producing enzyme period is short;(2) foreign protein content is few in Aly-Cob crude enzyme liquids, is easily isolated Purifying;(3) Aly-Cob has preferable thermal stability and the tolerance of pH and salt, has advantage in commercial Application;(4) Aly-Cob can be used for efficiently preparing brown alga oligose and carry out the viscosity reduction processing of alginate-containing raw material.
Description of the drawings
Fig. 1:Alginate lyase gene aly-cob PCR amplifications
Fig. 2:Algin catenase recombinates the verification of bacteria plasmid double digestion
Fig. 3:Recombinate the catabolite liquid phase figure of algin catenase Aly-Cob
Fig. 4:Recombinate the catabolite mass spectrogram of algin catenase Aly-Cob
Specific implementation mode
Embodiment 1:Algin catenase Aly-Cob full-length genes are cloned and analysis
(1) it is directed to the mixture of environmental sample and production waste material at kelp stacking in kelp production processing factory, is passed through Structure Fosmid Metagenomic library screenings obtain the gene of coding algin catenase.By the PCR amplification gene, design is drawn 5 ' ends when object in primer add restriction enzyme site BamH I and Hind III respectively, and primer sequence is:
AlyC-F:5’-CGGGATCCATGCGTAACACCCGTGTGC-3 ', what is marked with underscore is BamH I digestions position Point;
AlyC-R:5’-CCCAAGCTTTCATTGCATCTCACCGCTCT-3 ', what is marked with underscore is Hind III enzymes Enzyme site.
PCR conditions are:94 DEG C of pre-degenerations, 3min;94 DEG C, 30s;58 DEG C, 30s;72 DEG C, 1min;Totally 30 cycles, finally 72 DEG C, 10min.Agarose gel electrophoresis, which is shown in 1.0kb or so, a specific band (Fig. 1).It is coagulated from agarose It cuts on glue, is purified using DNA gel QIAquick Gel Extraction Kit.
(2) DNA fragmentation of purifying is connected on cloning vector pMD19-T, conversion is thin to e. coli jm109 competence It in born of the same parents, is incubated overnight on LB tablets (containing ampicillin), PCR verifications, selection is carried out after picking single bacterium colony Liquid Culture There is the positive colony of band to be sequenced.
Sequencing result is analyzed in NCBI, as a result shows that the sequence is that algin catenase encoding gene (is named as Aly-cob), gene code head of district 1059bp, nucleotide sequence is as shown in SEQ ID NO.1.The gene order is existed Homologous comparison is carried out in ncbi database, finds the gene and 21022 (NZ_ of Cobetia marina strain JCM CP017114 the algin catenase coded sequence similarity highest predicted in), reachable 90%, but gene NZ_CP017114 Exact function is simultaneously non-verified.
The algin catenase Aly-Cob of aly-cob codings is made of 352 amino acid, amino acid sequence such as SEQ Shown in ID NO.2, the theoretical molecular weight of protein is about 35.7kDa.With SignalP (https://www.plob.org/ Article/2404.html) the structural information of analysis algin catenase Aly-Cob, as a result shows that N-terminal starts to the 29th ammonia Base acid is signal peptide sequence, and 30-352 amino acids belong to 7 family of polysaceharide lyase.By algin catenase of the present invention The algin catenase AlgC-PL7 comparison discoveries of the amino acid sequence of Aly-Cob and the sources Cobetia sp.NAP1, the two phase It is 92.33% like degree.But no matter the two has differences (embodiment 3) in enzyme activity or zymologic property.Thus speculate, this hair The algin catenase of bright acquisition is a kind of new enzyme, has good research and application potential.
Embodiment 2:Recombinant bacterium is built and producing enzyme
The structure of recombinant bacterium E.coli BL21pLysS/pET-28a (+)-aly-cob:With restriction enzyme BamH I Distinguish digestion objective gene sequence aly-cob and plasmid pET-28a (+) with Hind III, with T4 ligases be ligated and transformed into In E.coli BL21pLysS.Picking single bacterium colony extracts recombinant plasmid after carrying out Liquid Culture, carries out PCR verifications to it, and make Double digestion verification is carried out with BamH I and Hind III.Two segments that length is respectively 5.3kb and 1kb or so are obtained, are such as schemed 2, it was demonstrated that alginate lyase gene on successful clone to expression vector pET-28a (+) and is converted to expressive host In E.coli BL21pLysS, this recombinant plasmid is named as pET-28a (+)-aly-cob, recombinant bacterium is named as E.coli BL21pLysS/pET-28a(+)-aly-cob。
The induced expression of recombinant bacterium:By the recombinant bacterium built by 1% inoculum concentration access liquid LB (containing kanamycins and Chloramphenicol) in, 37 DEG C of cultures to OD600Up to 0.8 or so, the IPTG that final concentration of 0.5mmol/L is added is induced, fermentation knot Centrifuging and taking supernatant after beam;Thalline is resuspended after being cleaned with PBS, is centrifuged after ultrasonication and leaves and takes supernatant;Hair is measured respectively using DNS methods Algin catenase vigor in ferment supernatant and broken supernatant, the two adduction are algin catenase enzyme activity.The results show that negative Enzyme activity, the enzyme activity of recombinant bacterium E.coli BL21pLysS/pET-28a (+)-aly-cob is not detected in control (unloaded recombinant bacterium) For 466U/mL.1 enzyme activity unit (U) is defined as:The 1mL enzyme solutions enzyme amount per minute generated needed for 1 μ g reduced sugars.
Objective gene sequence aly-cob is expressed using other plasmids or host, derivational expression method referring to E.coli BL21pLysS/pET-28a (+)-aly-cob, measures the enzyme activity of recombinant bacterium, the results are shown in Table 1.Algin of the present invention is split Enzyme Aly-Cob is solved compared with the AlgC-PL7 of document report, expressions of both system is identical, and (expression plasmid is pET-28a (+), table It is e. coli bl21 (DE3) up to host), under 37 DEG C of condition of culture, Aly-Cob enzyme activities are up to 462U/mL, about AlgC- 15 times of PL7 enzyme activity (~30U/mL).
Expressions of the 1 alginate lyase gene aly-cob of table on different hosts and plasmid
Embodiment 3:Recombinate the zymologic property research of algin catenase Aly-Cob
Recombinant bacterium E.coli BL21pLysS/pET-28a (+)-aly-cob is subjected to induction producing enzyme, and fermentation is obtained Crude enzyme liquid carry out zymologic property research after purification.
1) optimum temperature and temperature stability of recombination algin catenase Aly-Cob:By the recombination brown alga of debita spissitudo Glue lyases Aly-Cob solution measures enzyme activity at 25~65 DEG C respectively, by Aly-Cob enzyme solutions respectively in above-mentioned different temperatures In respectively keep the temperature 30min, measure remaining enzyme activity, highest enzyme activity be defined as 100%.In addition, Aly-Cob enzyme solutions are distinguished It is kept the temperature in 35,40,45,55,65 DEG C of water-baths.Sample residual enzyme activity is measured by sampling per 10min, determines the enzyme in different temperatures Under stability.It is final to determine that the optimum temperature of recombination algin catenase Aly-Cob is 45 DEG C, partly declining when less than 55 DEG C Phase is all higher than 1.0h, at 65 DEG C keep the temperature 1.0h after still have 48.76% opposite enzyme activity, illustrate the enzyme when less than 55 DEG C heat surely It is qualitative preferable.
2)Na+And K+On recombinating the active influences of Aly-Cob:Due to Na+And K+There is apparent facilitation to Aly-Cob, Therefore under different NaCl and KCl concentration (0.2,0.4,0.6,0.8,1.0,1.5,2.0,2.5,3.0,4.0molL-1) in 4 DEG C of incubation 1.0h, measure residual enzyme activity, determine best Na at the standard conditions+And K+Concentration and to enzyme generate inhibiting effect When NaCl and KCl concentration.Any metal ion will be not added with as blank control group, set its corresponding enzyme activity as 100%. The results show that 1.5molL-1NaCl and 1molL-1KCl it is maximum to the facilitation of recombinase, in 4molL- 1NaCl and 3molL-1Still recombinase unrestraint is acted under the salinity of KCl.The Vibrio sp.YKW-34 of document report and The resistance to NaCl concentration of algin catenase highest secreted by the Vibrio sp.QY105 and thermophilic salt termite bacterium WX of bacterial strain is respectively 0.1, 0.6 and 0.68molL-1, comparative illustration Aly-Cob is with higher salt tolerance.
3) substrate specificity of Aly-Cob:To study degradation capability of the enzyme to different substrates, the substrate for analyzing the enzyme is special The opposite sex, the substrate mainly chosen have sodium alginate, PM, PG.Concrete outcome is shown in Table 2, this is the result shows that the enzyme has degradation brown alga The ability of polysaccharide can not only degrade PG, but also the PM that can degrade for the algal polysaccharide enzyme, therefore, it is determined that the enzyme is a kind of difunctional Enzyme.
Degradation situation of 2 recombinase of table to different substrates
According to fig. 3,4 as can be seen that enzymolysis 110min after recombinase catabolite have two, three, four, five, six sugar, do not examine Monosaccharide generation is measured, this catabolite from the recombinase AlgC-PL7 of document report in 110min is different, it is seen that although the two Similarity is very high in sequence, but there are significant differences on zymologic property.
Embodiment 4:Recombinate applications of the algin catenase Aly-Cob in kelp liquid viscosity reduction
Kelp liquid 3000r/min is centrifuged into 5min, takes supernatant, enzyme solution is added at 40 DEG C, weight is added in 50mL kelp liquid The group algin catenase total enzyme amount 2000U of Aly-Cob, enzymolysis are constant to reduction sugar amount;Alpha-amylase 2000U is added, is digested 2h is constant to reduction sugar amount.It is sprayed on plant stem-leaf surface by being fitted into spray bottle after enzymolysis liquid centrifugation 10min, there is sterilization and promote Into the effect of plant-root growth.
Although the present invention has been described by way of example and in terms of the preferred embodiments, it is not limited to the present invention, any to be familiar with this skill The people of art can do various change and modification, therefore the protection model of the present invention without departing from the spirit and scope of the present invention Enclosing be subject to what claims were defined.
SEQUENCE LISTING
<110>Southern Yangtze University
<120>A kind of recombination algin catenase and its construction method and application
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<170> PatentIn version 3.3
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<220>
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atgcgtaaca cccgtgtgca ccaccccttg gtgacagcat ttctcctcgc tgccagtgca 60
gtcgccattt cagcaccggc tctggccaat gacactcccc ccggagagac attcgatctc 120
gatacctgga agctgactct tccgatggat gccgacggca atggcaaggt ggatgaaatc 180
aaggtcgccg atcttcagtc ctatcgtcac tctgactact tctatctcga cgatgattcc 240
catatggtct tcgtgacgcc caacaaggca ttcacgacac caaattcaag caatgcccgc 300
acggaactgc gccagatgct gcgtggcact gacaccagca tcggcaccca tgatccgaag 360
aacaacttcg cactcgcctc gaatcaacat gccgatgaat tcgctcagat aggcggctac 420
ctttccgcca ccctgcgagt ggaacatgtc gcggagcgtt cgaagaaacc agacaggaag 480
tcagcctact ccgtggtggt tggccagata catgctggca aggaccaggc attgatggag 540
gccgatgaag gtttcgggca tggcaacgag ccactcaaga tcttctacaa gaagctgccg 600
gacgacaaga ctggctccgt gttctggaac tacgagaaga atctcgccaa ggaagatccc 660
aagcgtaccg atgtcagcta cgcggtatgg ggcaacgact ggagcagcaa tgctgatccc 720
ggcaaggaag gtatcgcact gggtgatacc ttcagctaca aggtcgaggt caagggcgac 780
atcatgcatc tgaccttcaa tgccgatggc catccgacac acaatttcga gatcaatctt 840
gccgacaatg tcgatgccaa cggcaaggtg gataacgatg atcttccggc gggctacgcc 900
ggtgactgga tgtacttcaa ggcggggtcc tacaatcagt gcaacaccaa agccagttcc 960
aatgcctgtg aaggtacggg cgtatgggaa accgacaagg ccaacggcga ctacgccaag 1020
gtcgttttca ccaaggttga gagcggtgag atgcaatga 1059
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<223>It screens and obtains from natural environment
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Met Arg Asn Thr Arg Val His His Pro Leu Val Thr Ala Phe Leu Leu
1 5 10 15
Ala Ala Ser Ala Val Ala Ile Ser Ala Pro Ala Leu Ala Asn Asp Thr
20 25 30
Pro Pro Gly Glu Thr Phe Asp Leu Asp Thr Trp Lys Leu Thr Leu Pro
35 40 45
Met Asp Ala Asp Gly Asn Gly Lys Val Asp Glu Ile Lys Val Ala Asp
50 55 60
Leu Gln Ser Tyr Arg His Ser Asp Tyr Phe Tyr Leu Asp Asp Asp Ser
65 70 75 80
His Met Val Phe Val Thr Pro Asn Lys Ala Phe Thr Thr Pro Asn Ser
85 90 95
Ser Asn Ala Arg Thr Glu Leu Arg Gln Met Leu Arg Gly Thr Asp Thr
100 105 110
Ser Ile Gly Thr His Asp Pro Lys Asn Asn Phe Ala Leu Ala Ser Asn
115 120 125
Gln His Ala Asp Glu Phe Ala Gln Ile Gly Gly Tyr Leu Ser Ala Thr
130 135 140
Leu Arg Val Glu His Val Ala Glu Arg Ser Lys Lys Pro Asp Arg Lys
145 150 155 160
Ser Ala Tyr Ser Val Val Val Gly Gln Ile His Ala Gly Lys Asp Gln
165 170 175
Ala Leu Met Glu Ala Asp Glu Gly Phe Gly His Gly Asn Glu Pro Leu
180 185 190
Lys Ile Phe Tyr Lys Lys Leu Pro Asp Asp Lys Thr Gly Ser Val Phe
195 200 205
Trp Asn Tyr Glu Lys Asn Leu Ala Lys Glu Asp Pro Lys Arg Thr Asp
210 215 220
Val Ser Tyr Ala Val Trp Gly Asn Asp Trp Ser Ser Asn Ala Asp Pro
225 230 235 240
Gly Lys Glu Gly Ile Ala Leu Gly Asp Thr Phe Ser Tyr Lys Val Glu
245 250 255
Val Lys Gly Asp Ile Met His Leu Thr Phe Asn Ala Asp Gly His Pro
260 265 270
Thr His Asn Phe Glu Ile Asn Leu Ala Asp Asn Val Asp Ala Asn Gly
275 280 285
Lys Val Asp Asn Asp Asp Leu Pro Ala Gly Tyr Ala Gly Asp Trp Met
290 295 300
Tyr Phe Lys Ala Gly Ser Tyr Asn Gln Cys Asn Thr Lys Ala Ser Ser
305 310 315 320
Asn Ala Cys Glu Gly Thr Gly Val Trp Glu Thr Asp Lys Ala Asn Gly
325 330 335
Asp Tyr Ala Lys Val Val Phe Thr Lys Val Glu Ser Gly Glu Met Gln
340 345 350
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cgggatccat gcgtaacacc cgtgtgc 27
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cccaagcttt cattgcatct caccgctct 29

Claims (10)

1. a kind of gene of coding algin catenase Aly-Cob, which is characterized in that its nucleotide sequence have following feature it One:
1) there is DNA sequence shown in SEQ ID NO.1;
2) DNA sequence of amino acid sequence shown in coding SEQ ID NO.2;
3) one or several nucleotide of the DNA sequence of SEQ ID NO.1 progress are replaced, missed or added and is obtained The coding arrived has the active nucleotide sequence of algin catenase.
2. a kind of algin catenase, which is characterized in that have one of following feature:
1) 1-352s or 30-352 amino acids residue sequence of the SEQ ID NO.2 since aminoterminal;
2) one or several amino acid substitutions, deletions, or additions are carried out to amino acid sequence shown in SEQ ID NO.2 and is formed Have the active amino acid sequence of algin catenase.
3. a kind of method preparing the algin catenase described in claim 2, which is characterized in that include the following steps:
(1) alginate lyase gene is cloned into expression vector, obtains recombinant plasmid;
(2) by recombinant plasmid transformed host strain, the genetic engineering bacterium of production algin catenase is obtained.
4. according to the method described in claim 3, it is characterized in that, expression vector described in step (1), refers to Escherichia coli table Up to carrier, Yeast expression carrier, hay bacillus expression vector, Corynebacterium glutamicum expression vector, lactic acid bacteria expression vectors, strepto- Bacterium expression vector, phage vector, filamentous fungi expression vector, plant expression vector, insect expression vector or mammal are thin Cellular expression carrier.
5. method according to claim 3 or 4, it is characterised in that:The host strain, it includes Escherichia to refer to Escherichia coli host including coli BL21, Escherichia coli JM109 or Escherichia coli DH5 α is thin Born of the same parents, the ferment including Saccharomyces cerevisiae, Pichiapas toris or Kluyveromyces lactis Female bacterium host cell, the hay bacillus place including Bacillus subtilis R25, Bacillus subtilis 9920 Chief cell, the corynebacterium glutamicum including Corynebacterium glutamicum including Lacticacid Lactic acid bacteria host cell including bacteria COCC101, the actinomyces host including Streptomyces spp. are thin Born of the same parents including Trichoderma viride, Trichoderma reesei, Aspergillus niger, Aspergillus The insect including filamentous fungal host cell including Bombyx mori, Antharaea eucalypti including nidulans Cell, or the food in one's mouth including Chinese hamster ovary cell CHO, baby hamster kidney cell BHK, CHL cells CHL Newborn zooblast.
6. a kind of genetic engineering bacterium of the algin catenase described in expression claim 2.
7. application of the genetic engineering bacterium described in claim 6 in algin catenase is produced in fermentation.
8. application of the algin catenase in degradation alginate or algin described in claim 2, which is characterized in that extremely There is one of following purposes less:
1) it is used to be broken the glycosidic bond of alginate or algin, obtains alginate oligosaccharides;
2) for the alginate component in degrade red algae or brown alga cell wall, protoplast is extracted;
Or it 3) is used to destroy pathogenic bacteria pseudomonas aeruginosa (Pseudomonas aeruginosa) and is formed by brown alga in mycoderm Sour sodium ingredient.
9. application as claimed in claim 8, it is characterised in that:The inscribe algin catenase Aly-Cob and other sources Algin degrading enzyme or after other kinds of enzyme is used in combination, the height for containing alginate for Synergistic degradation glues raw material.
10. carrying the carrier of gene or genetic engineering bacterium or transgenic cell line described in claim 1.
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108690857A (en) * 2018-05-22 2018-10-23 齐鲁工业大学 A kind of preparation method of high-purity brown alga oligose
CN109295043A (en) * 2018-10-19 2019-02-01 中国科学院天津工业生物技术研究所 A kind of novel algin catenase, preparation method and application
CN109750022A (en) * 2019-03-27 2019-05-14 中科荣信(苏州)生物科技有限公司 A kind of algin catenase Alg2A and its preparation method and application
CN109852601A (en) * 2019-03-04 2019-06-07 江南大学 It is a kind of can efficient application N- glycosylation algin catenase mutant and construction of genetic engineering method
CN110257410A (en) * 2019-07-24 2019-09-20 江南大学 A kind of gene encoding algin catenase
CN110331137A (en) * 2019-06-03 2019-10-15 中国海洋大学 A kind of algin catenase and preparation method thereof
CN110452919A (en) * 2019-09-10 2019-11-15 南京工业大学 Truncated alginate lyase Aly7B-CDII gene and application thereof
CN110656054A (en) * 2019-11-08 2020-01-07 杭州师范大学 Recombinant trichoderma reesei for extracellularly secreting alginate lyase and application thereof
CN110885850A (en) * 2019-12-06 2020-03-17 五洲丰农业科技有限公司 Method for preparing alginate oligosaccharides and method for improving quality of turbot by using alginate oligosaccharides
CN111269907A (en) * 2020-04-03 2020-06-12 江南大学 Alginate lyase mutant based on loop region transformation and application thereof
CN111424027A (en) * 2020-03-31 2020-07-17 江南大学 Site-directed mutagenesis modified alginate lyase mutant and application thereof
CN112143724A (en) * 2019-06-28 2020-12-29 中国科学院青岛生物能源与过程研究所 Acetyl sodium alginate esterase and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103695341A (en) * 2013-12-16 2014-04-02 江南大学 Alginate lyase secreted from marine bacterium and preparation method thereof
CN105821063A (en) * 2015-01-05 2016-08-03 中国科学院大连化学物理研究所 Incision alginate lyase Alg2B and coding gene, preparation and application thereof
CN109852601A (en) * 2019-03-04 2019-06-07 江南大学 It is a kind of can efficient application N- glycosylation algin catenase mutant and construction of genetic engineering method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103695341A (en) * 2013-12-16 2014-04-02 江南大学 Alginate lyase secreted from marine bacterium and preparation method thereof
CN105821063A (en) * 2015-01-05 2016-08-03 中国科学院大连化学物理研究所 Incision alginate lyase Alg2B and coding gene, preparation and application thereof
CN109852601A (en) * 2019-03-04 2019-06-07 江南大学 It is a kind of can efficient application N- glycosylation algin catenase mutant and construction of genetic engineering method

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
GENBANK: "CP017114.1", 《NCBI》 *
HISASHI YAGI等: "Purification and characterization of a novel alginate lyase from the marine bacterium Cobetia sp. NAP1 isolated from brown algae", 《BIOSCIENCE, BIOTECHNOLOGY, AND BIOCHEMISTRY》 *
JIN-SONG GONG 等: "Purification and characterization of a high salt-tolerant alginate lyase from Cobetia sp.WG-007", 《BIOTECHNOLOGY AND APPLIED BIOCHEMISTRY》 *
刘旭梅等: "产褐藻胶裂解酶菌株 Cobetia sp. WG-007 的筛选及发酵优化", 《食品与生物技术学报》 *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108690857A (en) * 2018-05-22 2018-10-23 齐鲁工业大学 A kind of preparation method of high-purity brown alga oligose
CN109295043A (en) * 2018-10-19 2019-02-01 中国科学院天津工业生物技术研究所 A kind of novel algin catenase, preparation method and application
CN109295043B (en) * 2018-10-19 2021-02-05 中国科学院天津工业生物技术研究所 Alginate lyase, and preparation method and application thereof
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CN109852601B (en) * 2019-03-04 2023-04-07 江南大学 N-glycosylation alginate lyase mutant capable of being efficiently applied and construction method of genetic engineering bacteria
CN109750022A (en) * 2019-03-27 2019-05-14 中科荣信(苏州)生物科技有限公司 A kind of algin catenase Alg2A and its preparation method and application
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CN112143724B (en) * 2019-06-28 2022-07-26 中国科学院青岛生物能源与过程研究所 Acetyl sodium alginate esterase and application thereof
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CN110885850A (en) * 2019-12-06 2020-03-17 五洲丰农业科技有限公司 Method for preparing alginate oligosaccharides and method for improving quality of turbot by using alginate oligosaccharides
CN111424027A (en) * 2020-03-31 2020-07-17 江南大学 Site-directed mutagenesis modified alginate lyase mutant and application thereof
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